Projects

CSEMP assessment of lead in biota at New Brighton (Mersey)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean131.6434.21-12.8225.64
linear223.4128.74 -7.7015.4110.233 10.0014
smooth (df = 2)325.3935.39 -7.7015.39 0.013 10.9078
smooth (df = 3)420.6438.64 -4.32 8.64 6.751 10.0094

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200220187.3916.242-1.1490 0.2717-4.2300.0029
last 20 years200220187.3916.242-1.1490 0.2717-4.2300.0029

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 513.6 211.9-0.8854 0.1546-5.7260.9998
EC 513.61500.0 1.0717 0.1546 6.930<0.0001

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in biota at New Brighton (Mersey)


Raw data with assessment

Raw data with assessment of  lead in biota at New Brighton (Mersey)


Assessment plot

Assessment plot for  lead in biota at New Brighton (Mersey)


Metals data

Metals data for assessment of  lead in biota at New Brighton (Mersey)


Metals assessment

Metals assessment of  lead in biota at New Brighton (Mersey)


Related pages

  • Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
  • Assessment methodology for metals in biota
  • Accessment criteria for metals in biota